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Electric convection oven hood

If it's above a "commercial cooking appliance", and the exceptions of 507.1 do not apply, then 507.2 does. Hood required.
 
2009 IMC section 507.2.2--this is new to the 2009 edition, so it does not apply to erlier editions--allows electric only appliances that would normally be under a type II hood to have no hood as long as the extra heat and moisture loads are accounted for in the HVAC system. In addition, for each appliance not under a hood, 100 sq. ft. is added to the floor area required to be ventilated in the kitchen per section 403.3. Gas appliances still require a hood under any circumstances to remove products of combustion.
 
I always look at the spec's for the oven. some require a hood and some don't as long as it is vented to the specs. I always look to make sure the HVAC system is able to handle the extra heat and moister.

Justin
 
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